docs: def parseArgsPy26():
      """ Argument parser for Python 2.6 """
      from gsmtermlib.posoptparse import PosOptionParser, Option
      parser = PosOptionParser(description='Simple script for sending SMS messages')
      parser.add_option('-i', '--port', metavar='PORT', help='port to which the GSM modem is connected; a number or a device name.')
      parser.add_option('-b', '--baud', metavar='BAUDRATE', default=115200, help='set baud rate')
      parser.add_option('-p', '--pin', metavar='PIN', default=None, help='SIM card PIN')
      parser.add_option('-d', '--deliver',  action='store_true', help='wait for SMS delivery report')
      parser.add_positional_argument(Option('--destination', metavar='DESTINATION', help='destination mobile number'))    
      options, args = parser.parse_args()
      if len(args) != 1:    
          parser.error('Incorrect number of arguments - please specify a DESTINATION to send to, e.g. {0} 012789456'.format(sys.argv[0]))
      else:
          options.destination = args[0]
          return options